Study of the Safety and Effectiveness of Two Doses of Investigational Study Drug EVP-6124 in Subjects With Alzheimer's Disease

A Randomized, Double-blind, Placebo-controlled, Parallel-Group, 26-Week, Phase 3 Study of 2 Doses of EVP-6124 or Placebo in Subjects With Mild to Moderate Alzheimer's Disease Currently or Previously Receiving an Acetylcholinesterase Inhibitor Medication

The purpose of this study is to evaluate the safety and efficacy of 2 fixed doses of EVP-6124 compared to placebo for 26 weeks in subjects with mild to moderate Alzheimer's disease currently receiving stable treatment or previously treated with an acetylcholinesterase inhibitor.

Study Overview

• Status: Terminated
• Conditions: Dementia; Alzheimer's Disease
• Intervention / Treatment: Drug: Placebo; Drug: Drug: EVP-6124

• Study Type: Interventional
• Enrollment (Actual): 403
• Phase: Phase 3

Contacts and Locations

Study Locations

• Argentina
  • Buenos Aires, Argentina
  • Santa Fe, Argentina
  • Santa Fe
    • Rosario, Santa Fe, Argentina
• Australia
  • Victoria
    • Box Hill, Victoria, Australia
    • Caulfield South, Victoria, Australia
• Canada
  • Quebec, Canada
  • Nova Scotia
    • Halifax, Nova Scotia, Canada
  • Ontario
    • London, Ontario, Canada
• Czech Republic
  • Brno, Czech Republic
  • Chocen, Czech Republic
  • Hradec Kralove, Czech Republic
  • Praha 6, Czech Republic
  • Richnov nad Kneznou, Czech Republic
• France
  • Bordeaux, France
  • Caen, France
  • Paris, France
• Germany
  • Homburg, Germany
  • Mittweida, Germany
  • Munchen, Germany
  • Westerstede, Germany
• Italy
  • Ancona, Italy
  • Milano, Italy
• Korea, Republic of
  • Incheon, Korea, Republic of
  • Seoul, Korea, Republic of
• Mexico
  • Coahuila
    • Saltillo, Coahuila, Mexico
• Netherlands
  • Amsterdam, Netherlands
  • Den Haag, Netherlands
  • S'Hertogenbosch, Netherlands
• South Africa
  • Kwa-Zulu Natal
    • Durban, Kwa-Zulu Natal, South Africa
  • Western Cape
    • Bellville, Western Cape, South Africa
    • George, Western Cape, South Africa
• Spain
  • Madrid, Spain
  • Salamanca, Spain
• United Kingdom
  • Bath, United Kingdom
  • Glasgow, United Kingdom
  • Isleworth, United Kingdom
  • Northampton, United Kingdom
  • Penarth, United Kingdom
  • Southampton
    • West End, Southampton, United Kingdom
• United States
  • Arizona
    • Tucson, Arizona, United States
  • Arkansas
    • Little Rock, Arkansas, United States
  • California
    • Culver City, California, United States
    • Downey, California, United States
    • Los Alamitos, California, United States
    • Los Angeles, California, United States
    • Oceanside, California, United States
    • Orange, California, United States
  • Connecticut
    • Norwich, Connecticut, United States
  • Florida
    • Bradenton, Florida, United States
    • Gainesville, Florida, United States
    • Hallandale Beach, Florida, United States
    • Hialeah, Florida, United States
    • Jacksonville, Florida, United States
    • Leesburg, Florida, United States
    • Miami, Florida, United States
    • Sarasota, Florida, United States
    • Sunrise, Florida, United States
    • West Palm Beach, Florida, United States
  • Georgia
    • Atlanta, Georgia, United States
  • Illinois
    • Elk Grove Village, Illinois, United States
    • Springfield, Illinois, United States
  • Massachusetts
    • Newton, Massachusetts, United States
  • Mississippi
    • Hattiesburg, Mississippi, United States
  • New Mexico
    • Albuquerque, New Mexico, United States
  • New York
    • Albany, New York, United States
    • Cedarhurst, New York, United States
    • New Hyde Park, New York, United States
    • New York, New York, United States
    • Staten Island, New York, United States
  • North Carolina
    • Charlotte, North Carolina, United States
    • Durham, North Carolina, United States
  • Ohio
    • Shaker Heights, Ohio, United States
  • Oklahoma
    • Oklahoma City, Oklahoma, United States
  • Pennsylvania
    • Abington, Pennsylvania, United States
    • Jenkintown, Pennsylvania, United States
    • Plains, Pennsylvania, United States
  • Rhode Island
    • East Providence, Rhode Island, United States
  • Texas
    • Houston, Texas, United States
  • Utah
    • Salt Lake City, Utah, United States
  • Virginia
    • Charlottesville, Virginia, United States
  • Washington
    • Richland, Washington, United States

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 55 years to 85 years (Adult, Older Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• Ages ≥55 and ≤85 years
• Informed consent form (ICF) signed by the subject or legally acceptable representative before any study-specific procedures for the subject are performed and an ICF signed by the support person/caregiver before any study-specific procedures for the support person/caregiver are performed
• Clinical diagnosis of dementia due to probable AD consistent with criteria established by a workgroup of the National Institute on Aging and the Alzheimer's Disease Association
• Clinical decline within 12 months before screening and onset of symptoms at least 12 months or longer before screening, which may include any documented cognition, functional, or other objective assessment or the clinical judgment of the investigator or the subject's referring physician that the subject has experienced a clinical decline within the last 12 months
• Magnetic resonance imaging (MRI) or computed tomography (CT) scan performed within 12 months before screening, with findings consistent with the diagnosis of dementia due to AD without any other clinically significant comorbid pathologies. If an MRI or CT scan is unavailable or occurred greater than 12 months before screening, this assessment should be completed and the findings confirmed before the subject enters the run-in period (Day -14) (copy of the report will be available at the study site)
• Mini-Mental State Examination (MMSE) score ≥14 and ≤24 at screening and confirmed on Day 1 prior to randomization (fluctuations of ±2 points are acceptable on Day 1/baseline)
• Clinical Dementia Rating Global score (CDR-GS) ≥1 (at least mild dementia) at screening and confirmed on Day 1 prior to randomization
• Modified Hachinski Ischemic Scale (mHIS) score ≤4 at screening
• Fertile, sexually active subjects (men and women) must use an effective method of contraception during the study. Female subjects and the female partner of male subjects must be surgically sterile (hysterectomy or bilateral tubal ligation), postmenopausal for at least 1-year, or willing to practice adequate methods of contraception if of childbearing potential (defined as consistent use of combined effective methods of contraception [including at least 1 barrier method])
• Reliable and capable support person/caregiver, who if not living in the same household, interacts with the subject approximately 4 times per week and will be available to attend clinic visits in person when possible
• Subject living at home, senior residential setting, or an institutional setting without the need for continuous (ie, 24-hour) nursing care
• General health status acceptable for participation in a 26-week study
• Fluency (oral and written) in the language in which the standardized tests will be administered
• Receiving a stable dose of an acetylcholinesterase inhibitor (AChEI) (donepezil, rivastigmine or galantamine) for at least 3 months (90 days) before screening and with continuous dosing for at least 6 months OR not presently receiving an AChEI (at least 30 days before screening), but with a history of previous AChEI treatment (subjects receiving donepezil 23 mg currently or within 3 months before screening are ineligible)

Exclusion Criteria:

• Exposure to an experimental drug, experimental biologic or experimental medical device within 2 months (60 days) before screening
• Prior participation in an amyloid vaccination clinical study at any time in the past or completion of a passive amyloid vaccination study within 6 months before screening
• Inability to swallow a tablet
• In the judgment of the investigator, inability of the subject or the support person/caregiver to complete a 26-week study
• Inability to be ≥75% compliant with single-blind study drug
• Inability to adequately cooperate or complete the cognitive testing procedures or any study assessment
• Residence in a skilled nursing facility
• Untreated vitamin B12 or folate deficiency (if treated, must be stably treated for at least 6 months before screening)
• Clinically significant (in the judgment of the investigator) abnormal serum electrolytes (sodium, potassium, magnesium) after repeat testing
• Clinically significant untreated hypothyroidism (if treated, thyroid-stimulating hormone level and thyroid supplementation dose must be stable for at least 6 months before screening)
• Insufficiently controlled diabetes mellitus (in the judgment of the investigator) or requiring insulin
• Renal insufficiency (serum creatinine >2.0 mg/dL)
• Malignant tumor within 3 years before screening (except squamous and basal cell carcinoma or cervical carcinoma in situ or localized prostate cancer)
• Female subjects who are pregnant, nursing, or planning to become pregnant during the study
• Unstable medical condition that is clinically significant in the judgment of the investigator
• Alanine transaminase (ALT) or aspartate transaminase (AST) >2.5 times the upper limit of normal
• History of myocardial infarction or unstable angina within 6 months before screening
• History of more than 1 myocardial infarction within 5 years before screening
• Clinically significant (in the judgment of the investigator) cardiac arrhythmia (including atrial fibrillation), cardiomyopathy, or cardiac conduction defect (subjects with a pacemaker are acceptable)
• Symptomatic hypotension or hypertension (supine diastolic blood pressure >95 mmHg) (in the judgment of the investigator)
• Clinically significant abnormality on screening or baseline electrocardiogram (ECG), including but not necessarily limited to a confirmed corrected QT interval (QTc) value ≥450 msec for males or ≥470 msec for females. In subjects with a QRS value >120msec, those with a QTc value <500 msec may be eligible following discussion with the Medical Monitor.
• Stroke within 18 months before screening, or history of a stroke concomitant with onset of dementia
• History of brain tumor, subdural hematoma, or other clinically significant (in the judgment of the investigator) space-occupying lesion on CT or MRI
• Head trauma with clinically significant (in the judgment of the investigator) loss of consciousness within 12 months before screening or concurrent with the onset of dementia
• Onset of dementia secondary (in the judgment of the investigator) to cardiac arrest, surgery with general anesthesia, or resuscitation
• Specific degenerative central nervous system (CNS) disease diagnosis other than AD (eg, Huntington's disease, Creutzfeld-Jacob disease, Down's syndrome, Fronto-Temporal Dementia, Parkinson's disease)
• Subjects with no history of prior treatment with an AChEI (donepezil, rivastigmine, or galantamine)
• Memantine currently or within 30 days before screening
• Antipsychotics; low doses (in the judgment of the investigator, except clozapine) are allowed only if given for sleep disturbances, agitation and/or aggression, and only if the subject has received a stable dose for at least 3 months before screening (but not within 8 hours before any cognitive test)
• Tricyclic antidepressants and monoamine oxidase inhibitors; all other antidepressants are allowed only if the subject has received a stable dose for at least 3 months before screening
• Antiepileptic medications if taken for control of seizures
• Chronic intake of opioid-containing analgesics
• Sedating H1 antihistamines
• Nicotine therapy (including the patch), varenicline (Chantix), or similar therapeutic agent within 30 days before screening
• Clinically significant urine drug screen or serum alcohol test result in the judgment of the investigator
• History of ischemic colitis or ischemic enterocolitis

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: Quadruple

Number of Arms

3

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Experimental: EVP-6124, low dose; low dose, Tablet, Once Daily, Day 1 through Day 182	Drug: Drug: EVP-6124
Experimental: Experimental: EVP-6124, high dose; high dose, Tablet, Once Daily, Day 1 through Day 182	Drug: Drug: EVP-6124
Placebo Comparator: EVP-6124, Placebo; Placebo, Tablet, Once Daily, Day 1 through Day 182	Drug: Placebo

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Change from Baseline in Alzheimer's Disease Assessment Scale-Cognitive Subscale 13-item (ADAS-Cog-13) to Day 182		Baseline to Day 182 or Early Termination
Change from Baseline in the Clinical Dementia Rating Sum of the Boxes (CDR-SB) to Day 182		Baseline to Day 182 or Early Termination
Safety and tolerability of EVP-6124 or Placebo in Subjects with AD	All adverse experiences spontaneously reported by subject and/or observed by an investigator and repeated clinical evaluation of physical exam, vital signs, 12-lead ECG (electrocardiogram), ambulatory ECG and laboratory tests (hematology/blood chemistry/urinalysis)	Baseline to Day 182 or ET

Secondary Outcome Measures

Outcome Measure	Time Frame
Change from Baseline in activities of daily living using the Disability Assessment for Dementia (DAD)	Baseline to Day 182 or Early Termination
Change from Baseline in psychiatric and behavioral symptoms using the Neuropsychiatric Inventory (NPI)	Baseline to Day 182 or Early Termination
Change from Baseline in the Mini-Mental State Examination (MMSE)	Baseline to Day 182 or Early Termination
Change from Baseline in the Controlled Oral Word Association Test (COWAT)	Baseline to Day 182 or Early Termination

Collaborators and Investigators

• Sponsor: FORUM Pharmaceuticals Inc

Study record dates

Study Major Dates

• Study Start: October 1, 2013
• Primary Completion (Anticipated): January 1, 2017
• Study Completion (Anticipated): January 1, 2017

Study Registration Dates

• First Submitted: October 21, 2013
• First Submitted That Met QC Criteria: October 24, 2013
• First Posted (Estimate): October 25, 2013

Study Record Updates

• Last Update Posted (Estimate): May 3, 2016
• Last Update Submitted That Met QC Criteria: May 2, 2016
• Last Verified: September 1, 2015

More Information

Terms related to this study

• Keywords: Alzheimer's disease; Cognition; Alpha-7 nAChR
• Additional Relevant MeSH Terms: Mental Disorders; Brain Diseases; Central Nervous System Diseases; Nervous System Diseases; Neurocognitive Disorders; Neurodegenerative Diseases; Dementia; Tauopathies; Alzheimer Disease
• Other Study ID Numbers: EVP-6124-025; 2013-002653-30 (EudraCT Number)